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Using multi-tracer inference to move beyond single-catchment ecohydrology

AuthorsAbbott, Benjamin W.; Baranov, Viktor; Mendoza-Lera, C.; Nikolakopoulou, Myrto; Harjung, Astrid; Kolbe, Tamara; Balasubramanian, Mukundh N.; Vaessen, Timothy N. CSIC; Ciocca, Francesco; Campeau, Audrey; Wallin, Marcus B.; Romeijn, Paul; Antonelli, Marta; Gonçalves, José; Datry, Thibault; Laverman, Anniet M.; de Dreuzy, Jean-Raynald; Hannah, David M.; Krause, Stefan; Oldham, Carolyn; Pinay, Gilles
KeywordsHydrological tracer
Environmental hydrology
Residence time
Exposure time
Reactive transport
GW-SW interactions
Hot spots
Hot moments
Crossed proxies
Surface water
Aquatic ecology
Issue Date2016
CitationEarth-Science Reviews 160 : 19-42 (2016)
AbstractProtecting or restoring aquatic ecosystems in the face of growing anthropogenic pressures requires an understanding of hydrological and biogeochemical functioning across multiple spatial and temporal scales. Recent technological and methodological advances have vastly increased the number and diversity of hydrological, biogeochemical, and ecological tracers available, providing potentially powerful tools to improve understanding of fundamental problems in ecohydrology, notably: 1. Identifying spatially explicit flowpaths, 2. Quantifying water residence time, and 3. Quantifying and localizing biogeochemical transformation. In this review, we synthesize the history of hydrological and biogeochemical theory, summarize modern tracer methods, and discuss how improved understanding of flowpath, residence time, and biogeochemical transformation can help ecohydrology move beyond description of site-specific heterogeneity. We focus on using multiple tracers with contrasting characteristics (crossing proxies) to infer ecosystem functioning across multiple scales. Specifically, we present how crossed proxies could test recent ecohydrological theory, combining the concepts of hotspots and hot moments with the Damköhler number in what we call the HotDam framework.
Description24 páginas, 9 figuras, 1 tabla.
Publisher version (URL)http://dx.doi.org/10.1016/j.earscirev.2016.06.014
Appears in Collections:(CEAB) Artículos
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